Comparing: AT 7 vs. E 25 vs. SU-152

Conceived as an assault breakthrough tank, this design was completed by June 10th, 1943. No complete prototypes were built. However, some parts and components of the AT7 were used in the A39 Tortoise.

The development of the E 25 was part of the "E" program, supervised by the Waffenprüfamt 6 committee. The E 25 was developed by the Argus company (Karlsruhe, Germany) under the supervision of Dr. Herman Klaue. No prototypes were manufactured.

Development of a tank destroyer on the basis of the KV-1S heavy tank began on January 4, 1943. The vehicle received the designation KV-14 (Object 236). A prototype underwent field trials at the beginning of February 1943 and entered service on February 14, 1943. In April, the KV-14 was renamed SU-152. By December 1943, 670 vehicles were manufactured. Thanks to its ability to successfully combat german Tiger I and Panther tanks, the SU-152 was dubbed "Hunter" by the troops.